15-Letter Words Matching __T__G_________

There are 13 15-letter words that match __T__G_________. 2 are common words, such as INTANGIBILITIES and NITROGLYCERINES. A rarer one is TETRAGRAMMATONS. In this set, I is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 13

intangibilitiesnitroglycerinesretrogressivelyantiegalitarianextinguishmentsintergenerationintergradationsliturgiologistsorthogonalitiesorthogonalizingpathogenicitiesretrogradationstetragrammatons

About this list

Words
13 (2 common words)
Common example
intangibilities
Rare example
tetragrammatons
Doubled letters
2
Ending in S
9
Most frequent letter
I (12)

Questions

How many 15-letter words matching __t__g_________ are there?

13. 2 of them are common words.

What is a common example?

INTANGIBILITIES is among the common words in this set.